National Republican., 1887-12-16
SPECIAL NOTrOEs
PURE WATER.

EB
The following is the official report of the
superintendent and engineers OF The water
works of Atlanta, Ga, dated Nov. 20, 1887:
Honorable Board Water Commissioners:
GENTLEMEN. According to a resolution ad-
opted by your honorable body at the last meet
ing have made thorough aud complete test
of the filters as to their capacity. The builders
guarantee is that they (the twelve iilters) shall
filter 100000 gallons in twenty-four hours.
@T clayton city engpeer hf aaSsnss asss
city, and Mr. G. II. Kendrick, in behalf Of the
test. Mr.. Travis, the engineer in charge Of the
pumping station, gave his personal attention
10 the operation OF the engine and pumps. The
Sa stss sSoe epSas eSa %ss 5 GSgh
engine is usually put In service after the heavy
con.umpiion oithe day isover and run through
Mr.. Clayton and myself decided that run
Of twelve hours, requiring that during the
time six of the twelve filters should be thor
oughy washed, would be good and suii-
and closed at 1880 p. m. The water being de.
liyeIed by the pumps was estimated from the
revolutions of the engine, and was accepted
as the quantity being filtered. Readings were
taken flom the engine counter and the height
of water In the clear water basin at the expira.
titn Of every hour The theoretical pumping
each shfe syadef he at euSS
displnct ment OF the rod from the up strokc) is
20 'b5-lCO0 gallons, which give for the four
pumps lO4 220 1000 gallons at each revolution.
In figuring the duty the friction Is left out as a
compensation for loss In actual pumpage,
caused from loss of probable leakage by
plunger and close OF valves. The pumps were
In good condition. and the per cent OF loss al.
lowed may or may not be sufficient. This
would be hard 10 determine accurately but as
the head of 800 feet on the pumps give l3o
aDS se se percentages Of feis isss At ths
point is small. The clearwater basin holds
$4,000 gallons with the water up to the
twenty.ioot mark-1 ,406 gallons per inch OF
charged from the filter was such that small
objects at the bottom Of the basin could be
plainly seen through twenty feet OF water; and
at the close of the test the bottom was plainly
seen by moonlight.
There are twelve filters ten feet in diameter,
thirteen feet high. AT the opening of the test
an hour one filter was cut ont and nine were
used (the water in the basin gaining on the
pumps; then nine filters were used for nine
and a half hours; then the twelve filters were
put in and run for seven and half hours, aud
eleven for the closing half hour, making au
average of eleven filters in use throughout the
twelve hours Tho result obtained shows that
the filters. In the present condition Of the
water have capacity OF filtering 4,2le,OOi
gallons in twenty.four hours.
A tabulated statement OF each hours work is
attached to the report uncer the following
heads: Time, height OF water in basin, read.
ing OF engine counter revolutions OF engine,
gallons OF water pumped, equivalent 10 NUN
Der OF gallons In twenty -four hours, number of
filters In use. The footing OF these columns
gives the following:
Gallons.
Water at close OF test three inches
higher than ut opening. .............. Ass
Water pumped 1,027,siS
not In use l75,66s
Result in y hours. 2lOs,OO2
Capacity OF 70 filters In % hours....... 4,2l60Oi
r. NJ CLAYTON, City Engineer.
&, u. HANSEs. Assistant City Engineer.
WM. q. RICHARDS, supt Water Works.
THE ABOVE IS ON A PLANT RECENTLY
COMPLETED IN ATLANTA, GA, By THE
HYATT PURE WATER CO.; OFFICE, TRl.
HUME BUILDING, NEW YORK.
AGENT FOR WASHINGTON. ID. c.,
8. q. TIFFANY,
deIGi7,2O,2I EBBITr HOUSE.
R~S5z OFFICE OF THE MUTUAL FIRE IN
~ SURAECE COMPANY OF DISTRICT